1.) Do yo plan to utilize the MR-350 with multiple programs at the same time in one computer?If so, you can take a look at the xPort program (http://www.curioustech.net/xport.html). This would only work in 32-bit systems. You can also refer to this software called GPSGate (http://gpsgate.com/).

2.) Or, do you want to use the device with several computers simultaneously? Please confirm.

3.) Also, what do you mean by UPS with the NMEA signal?

4.) What kind of multiple listeners do you want to test with the unit? Provide some datasheets or specs.

5.) Another thing, what do you plan to do in having the MR-350 feed an ethernet hub?

2.) Or, do you want to use the device with several computers simultaneously? Please confirm.

Perhaps several computers. This would be for a boat, eventually I might put together a low power usage 12V PC, perhaps running Linux. For now I use a laptop. It would be great for development to be able to use more than one PC.

I connected to the MR-350 via a ps2 breakout cable with 5V power and ground pins connected, and attempted to read the NMEA output on the TX pin. I was surprised to that what appears to be changing data is at a negative voltage. Have you seen this issue? I determined the data pins from your tech page listing the pinout for the female jack. Might I have VCC and ground reversed?

What do you mean by 'changing data'? Please provide more details about this.What is the value of the negative voltage?Also, can you please provide the link where you found the pinout connections for the female jack?

What do you mean by 'changing data'? Please provide more details about this.What is the value of the negative voltage?Also, can you please provide the link where you found the pinout connections for the female jack?

OK, but I'm not looking for a cable adapter. The MR-350 transmits NMEA data and I plan to interface it to a VHF radio which accepts NMEA in. Very straightforward. Or at least it should be. ;-)

Getting back to my question:

I connected to the MR-350 via a ps2 breakout cable with 5V power and ground pins connected, and attempted to read the NMEA output on the TX pin. I was surprised to that what appears to be the NMEA data is at a negative voltage. Have you seen this issue? I determined the data pins from your tech page listing the pinout for the female jack. Might I have VCC and ground reversed?

By the way, can you please provide the following information:What is the serial number of the unit? It should be located at the back of the unit.Where did you bought it from?What is the date of purchase?

By the way, can you please provide the following information:What is the serial number of the unit? It should be located at the back of the unit.Where did you bought it from?What is the date of purchase?

I purchased it 2 1/2 weeks ago from an electronics store in Toronto. As for the serial number, I would have to climb up the boat in the yard, undo the nut to check it for the serial number. A lot of work but I could do it if you'll agree then answer my question.

I purchased it 2 1/2 weeks ago from an electronics store in Toronto. As for the serial number, I would have to climb up the boat in the yard, undo the nut to check it for the serial number. A lot of work but I could do it if you'll agree then answer my question.

My mistake on the pinout. Just to help anyone else: The "trick" is realizing that when you connect the female jack to the male, the pin numbers get reversed - the female is a mirror image. Pin 1 on Female does NOT connect to Pin 1 on the male. So I had power reversed, thus the negative output. But I must admit that I'm a little put out by the serial number question. As if I'd be asking questions about connecting the device if I didn't have one...